TELEPHONE No. 135
|Laryngaphone wall Telephone.
For use on CBS No.1 and Magneto systems.
The handset is a Tele No. 186.
Diagram is dated 1931.
Laryngaphones where used in noisy environments. Many wall mounted models were used in Zeppelins and the like.
Circuit diagram -
Last revised: November 20, 2021